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The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [ 1 ] In 1950, the boundaries of the numbering plan area were redrawn to produce a division of the northern and central parts along a north–south ...
The additional demands for PCS and cellular phone numbers helped necessitate the 831/408 area code split, the 650/415 split, and the earlier 510/415 split. Part of the previous dialing plan included a mass calling prefix for radio station contests, introduced in the 1960s because some contests put unacceptable loads on the Bay Area's telephone ...
Area codes 310 and 424 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. The numbering plan area includes the West Los Angeles and South Bay areas of Los Angeles County , a small portion of Ventura County , and Santa Catalina Island , which is located 26 miles (42 km) south.
Area codes 760 and 442 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. These area codes serve an overlay complex that comprises much of the southeastern and southernmost portions of California. It includes Imperial, Inyo, and Mono counties, as well as portions of San Diego, Riverside, San ...
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, or 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.
This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021. [1] On June 8, 2023, the California Public Utilities Commission assigned area code 837 to overlay 530, effective January 31, 2025. [2] 837 will serve as California's 40th area code. As ten-digit dialing is already in effect, no permissive dialing ...
Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes.Area codes 657 and 714 are shown in red. Area codes 714 and 657 are telephone area codes in the North American Numbering Plan (NANP) for the southern part of the U.S. state of California.
Area code 916 was one of the first three original area codes established in California in October 1947. It originally covered most of northeastern California, but area code splits have reduced its coverage to the greater Sacramento area. Area code 279 began service in March 2018 to relieve an exhausted supply of telephone numbers in the 916 ...